today's new JJ? Come in please!
WHERE ARE THE OLD JJ FOR THE FOLLOWING?? THANKS!!! PLEASE PROVIDE ANSWER TOO!
2．队员分布那题。答案为68那题
3． K、M 为常数， F（X）=KX~3+MX-1 ，F（-7）=3，求F（7）=？
4．车行驶时速度为R/ 小时，刹车时得走D=0。135R~2- 2R才能完全停下来。问，若行使是2R/小时，问刹车时会比R/小时多行驶多远？
简单，但读题时，要抓住重点。（这种题要注意是否有单位换算）
5．（老机经）S1=102，S2=108，S3=114，SN=SN-3+18， 问哪个数在该数列里的那题。
6 DS（老机经）红书和蓝书上下垒放，红在上，蓝在下，且红蓝之间隔两本书。问红之上有几本？
1） 红书下有N （具体数）2）蓝书上有7本 选B 那题
(1) Totally 10 people, including Harry. Pick 1 out of 10 for president, then pick 1 out of 9 for secretary, pick 1 out of 8 for treasurer. What is the probability that Harry will be picked for either secretary or treasurer?
(2) Trangle ABC, extend three sides to form three angles X, Y, Z respectively. (X=180-C, Z=180-A, Y=180-B) What is the value of X?
(a) X=Z
(b) X=Y
(3) Six sided polygon, 1 circle is in the middle, and the other 6 circles are on the six corners respectively. These 7 circles have the same diameter and are tangent each other. What is the area of shaded area?
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